Mick Edmunds said plan A had given way to plan B then plan C, but "we got lot of runs in" - including an undie run raising funds for firefighters.

"We meant to travel up the east coast of Victoria - that's all fire grounds now; we meant to pass through Eden - that was almost evacuated ... we were going to run a couple of events we picked in Canberra, but the level of smoke was shocking, so we thought we'd the pull the pin," he said.

"But we got a lot of runs in; at one stage, in 24 hours we actually did three running races ... which was pretty hectic."

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The Gunnedah family - Mr Edmunds, wife Erin, sons Brandon and Max, and daughters Georgie and Sienna - did races and fun runs in Mount Gambier, Geelong, Bells Beach, Torquay, Portsea and more.

He said one of the highlights was daughter Sienna's achievements.

"She was a bit of a star in our family: she set three event records for the under-11s, and she's only nine."

The "most significant" was at the Mount Gambier parkrun, which has been held 323 times.

"She's the fast under-11 to have run there in all those events [and] took 2m18s off the record," he said.

He said running was a hugely positive pastime for the family.

"It's a social thing; it puts our boys right out there into the community, not just in Gunnedah," he said.

"Wherever we go, people are so impressed they're special-needs fellas running and getting up and doing things.

"They win fans wherever they go ...

"The school has commented that our girls are far more out of their shell; their confidence boost from doing these trips away has been enormous for them.

"They love seeing the whole country.

"And for all of them, it is a discipline thing.

"They all run twice a week before school.

"On a Wednesday before school, they do 7km of mountain running: 5.30 out of bed, go run 7km - including 2.5km uphill - come home, shower and go to school; they're pretty tough."